You may have read articles crowing about the box office record set this year. For the first time, movies have grossed more than $10 billion at the North American box office (which includes the U.S. and Canada). However, a closer look at the numbers shows that while the box office gross set a record this year, attendance is not the reason. It has to do with the increase in ticket prices.
Deadline Hollywood Daily), shows that ticket sales, while up for this year, fall in the average range. For the 11 years on the chart, 6 of them have higher ticket sales than 2009. Furthermore, except for the years 2002-2004, movie attendance has basically remained stable at fewer than 1.5 billion admissions a year during a decade when the population of the U.S. and Canada grew by approximately 33 million (See here and here).
Note that ticket prices have gone up 47% since 1999 while paid admissions have actually fallen from that year.
Furthermore, Dave Kehr reports that DVD sales have fallen $800 million in 2009. Standard DVD sales fell $1 billion with Blu-ray sales increasing by $200 million.
So while Hollywood is basking in its record year, it's an illusion. Attendance is relatively flat over the decade, DVD sales have fallen and only rising prices have led to increased revenue. They haven't grown the pie, only charged more for each slice. Should the audience tire of stereoscopic 3D (and its higher ticket prices), the box office gross may drop significantly next year.